Sewing-machine.



R. S. KELSO.

SEWING MACHINE.

APPLICATION FlLED NOV. IL 1914.

1 1 76,46 1 Patented Mar. 21, 1916.

2 SHEETS-SHEET l.

THE COLUMBIA PLANOGRAPH co., WASHINGTON, D. C.

R. S. KELSO.

SEWING MACHINE. APPLICATION FILED Nov. 11. I914.

Patented Mar. 21, 1916.

2 SHEETS-SHEET 2.

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RALIPH SIMPSON KELSO, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE STANDARD SEVTING MACHINE COMPANY, OF CLEVELAND, OHIO, A CORPORATION OF OHIO.

SEWING-MACHINE.

integer.

resulted in my prior Patent, No. l,129,403,

of February 23, 1915. The present application relates particularly to the edge gage I mechanism and the presser mechanism dis? closed, but not claimed, in the c'o-pending application referred to.

The principal object of the present inven tion is to provide gaging and pressing means so associated that in the normal operation of the machine, the gaging means will rise and fall substantially in unison with the presser, though mounted independently of the presser and capable of independent movement relative to it when itis desired to throw the gage into and out of action.

The invention 1s illustrated in the accompanying drawings, certain views of which illustrate the trimming mechanism constituting the subject matter 'of the above. named pending application to show the retionof the front side of a portion. of the head of a sewing machine illustrating the present invention applied .thereto, only so much of the sewing machine being shown as is necessary for illustration of the invention; Fig. 2 1s a vertical section taken on the linev 2-2 of Fig. 1 and looking in the direction of the arrows; Fig. 3 is a broken elevation of the rear side of the mechanism shown in Fig. 1, the trimmlng mechanism being omitted to more clearly illustrate the.

operation of the presser and edge gage mechanism; Fig. 4 is a broken elevation corresponding to Fig. 1 showing theposition which the parts assume when the presser bar is in its raised position; and Figs. 5 and 6 are. detail viewsillustrating the edge gage and the means for throwing it into and out of action and for-holding it out of action. j I

Figs. 1, 2 and 4 illustrate the trimming Specification of Letters Patent.

to a reciprocating knife bar 0.

application.

Patented Mar. 21, 1918.

i Original application filed June 30, 1911, Serial No. 636,138. Patent No. 1,129,403, dated February 23, 1915.

Divided and. this application filed November 17, 1914.

Serial No. 872,527.

mechanism which constitutes no part of the present invention, and, therefore, a detailed description thereof is not necessary. For the present purposes, it is only necessary to note the stationary bracket a secured to the under side of the head of the sewing machine, and the lever Z) pivoted thereto and The frame which carries the lever 19 has pivotally'associated therewith, the movable knife cl which is yieldingly held in proper relation to said frame by a suitable spring 6. By this construction, the reciprocation of the knife bar 0. imparts a curvilinear movement of the movable knife (5 in the manner described'in the above-mentioned co-pending In connection with the trimming mechanismjust described, it is customary to employ suitable pressingmeans for engaging the work close to the line of stitching. In the present instance, the preferred construction is a roller presser of the type described in detail and claimed in prior Patent No. 1,129,404, of February 23, 1915.

The main features of this part of the machine are the roller presser [1 and suitable means for adjusting it in two intersecting paths, preferably in a horizontal plane, and for also moving it into and out of an operative position, the construction being such that when the roller presseris moved to its inoperative position, it is located at a considerable distance from'the needle and the knife d, and the operator has ready access to the needle for threading it and to the knife for adiusting it, etc. Here, said roller presser is shown as carried by an arm 2, which is pivoted on a horizontally adjustable member or carrier 3 secured to a block 4, fastened to the lower end of the presser bar 5 (Fig. 3). The presser or roller 1., being connected to the usual presser bar 5 through the intermediary of the arm 2 and crosspiece 3, moves up and down with the presser bar 5 upon actuation'of the usual lever 6 controllingthe movements of the the gage proper of this edge gage is here illustrated as an extension of a spindle 8 'mounted in a relatively long bearing 9,

which, inthe present construction, is adthe line of stitching.

justably secured to the same bracket a to which the lever b of the trimming mechanism is" pivoted; The bracket a is illustrated as having .an open-sided clamp 10 formed asa part of the bracket a, and so constructed as to permit the gage carrier, that is the sleeve of the spindle, to be located in an in-. clined or diagonal position with respect to The spindle 8 has a stop 11, between which and the lower end of the bearing 9, is shown a spring 12, which normally holds the edge gage down and in working position. At the upper end of said sleeve is shown a lateral arm 13, with which cooperates a detent device l t carried by the upper end of the spindle 8.

' may be of any suitable construction, one

simple form being clearly illustrated in Figs. 5 and 6. By means of-the latch arm 15 of this detent, the spindle may be latched in its uppermost position, shown in said figures, or released when it will be drawn down by the spring 12 to the full-line position, shown in'Fig. 5. This control ofthe throwing in and out of the edge gage is entirely independent of any control by the other mechanism. Adjustable means may be provided, if so desired, for limiting the downward movement of the edge gage, such means, in the present instance, taking the form of a thumb screw 16, which is thread ed in the detent device 14, and contacts with the lateral arm 13, in the lowermost position of the edge gage. A suitable locknut 17 may be provided for locking the thumb screw 16 with respect to the detent 14.

An important featureof the mechanism, however, is the provision of means for controlling the throwing out of action of the edge gage directly from the pressing means. It is desirable to raise the edge gage at the same time that the presser is raised, and in Order to accomplish this result, there is illustrated, at 16, an upwardly-extending arm secured to the block 1, which arm has, atits extreme upper end, a finger that projects under the main portion of the detent device 14: and engages the under side of it at a point close to the spindle 8, as best shown in Figs. '1 and' l. Thus, it will be clear that whenever the lever 6 is. actuated to raise the presser bar and presser, the edge gage will also be raised simultaneously with the presser mechanism by the action of the arm 16, which engages and lifts the detent 14: and with it, the edge gage. The relative positions of these parts, when in contact with the Work and when raised away from the work, are clearly shown in Figs. 1 and 4;

By the foregoing construction, it will be seen that the edge gage may be raised at any time independently of the presser 'mechanisin, and may be supported inits raised position by means of the latch device de- This detent scribed. However, when the presser bar is raised by the lever 6, the arm 16, which rises I in unison with the presser bar, acts upon the 'edge gage to shift the same to its'raised position. Whenthe presser bar is lowered, the spring 12 serves t return the edge gage to its operative POSllllQIl, as the upward movement of the presser bar is not sufiicient to cause the latch device to operate. It is onl Whenthe ed e a e is raised a suf- O t b ficient distance independently of the presser bar that the latch device operates to hold the edge gage in its raised position until the latch device is so actuated as to release the gage.

in the details of construction of both the presser mechanism and the edge gage mechanism without departing from the spirit or scope of the invention, as defined in the bar for longitudinal sliding movements, and;

means operated by the presser-bar for rais- Obviously numerous changes may bemade ing the edge-gage fromthe work on the rising of said presser-bar and presser. V

2. In a'sewing machine, the'combination with a presser-bar and presser, of an edgegage mounted on the framework independently of the presser bar for longitudinal sliding movements, means connected with and-operated by the presser-bar for raising the edge-gage from the work on the-rising; of sald presser-bar and presser, a spring'for normally holding said gage in its operative V osition and means for raisin the ed egage from the work independently" of said 7 presser-bar in oppositi'onto the action of said spring. 3

3. In a sewingmachme, the combination with apresser-bar and presser, of an edge= gage mounted on the framework independently of the presser-bar for longitudmal sliding movements, fmean'sconnected with and operated by the presser-bar for, raising the edge-gage from the-work on the rising] of said presser-bar and presser, a spring for normally holding said gage in its operative position, and means for raising the edge-gage from the workindependently of said presser-bar in opposition to the action of said spring and for holding said gage in 1ts raised position. j

4. In a sewing machine, the combination with a presser-bar and presser. of an edgegage mounted independently of the presserbar for longitudinal sliding movements, means to permitraising of said edge-gage from the work independently of the presserbar. means for holding said gage in its raised position, and. means whereby the gage is raised when the presser bar is raised.

5. In a sewing machine, the combination With a resser-bar and presser, of an edgegage mounted independentlv of the presserbar for longitudinal sliding movements, means to yieldingly hold said gage in its operative position, means to permit raising of said gage independently of the presserbar, means to hold it in its raised position, and means whereby the gage is raised When the presser-bar is raised.

6. In a sewing machine, the combination with a resser-bar and presser, of an edge gage, a bearing disposed adjacent to the Copies of this patent may be obtained for presser-bar and in Which the edge gage is slidably mounted, and means associated With the resser-bar and engageable with a slidable portion of the edge gage for raising the edge gage from the Work on the rising of said presser-bar and presser.

Signed at Chicago, in the county of Cook,

and State of Illinois, this 13th day of November, A. D. 1914:.

RALPH SIMPSON KELSO. Witnesses:

JAMES R. MOFFATT, E. RABNER.

five cents each, by addressing the Commissioner of Patents.

Washington, D. C. 

